PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-23:43:10
G10     260.5          35.5                9.3 +/-    2.19      14.7 +/-    2.19  0.040 / 0.040
G13     45.0           22.0                6.0 +/-    1.80      12.5 +/-    1.80  0.050 / 0.040
G15     66.9           52.9                7.4 +/-    0.78       9.0 +/-    0.78  0.120 / 0.240
G16     285.9          14.2                5.9 +/-    1.29      15.0 +/-    1.29  0.130 / 0.300
G20     285.7          56.7                8.8 +/-    1.80      10.3 +/-    1.80  0.180 / 0.270
G21     348.6          67.0                7.8 +/-    0.66       8.4 +/-    0.66  0.140 / 0.270
G24     126.5          10.3               -6.8 +/-   35.01     -18.7 +/-   35.01  0.030 / 0.040
G26     258.9          10.9                8.6 +/-    2.34      23.4 +/-    2.34  0.030 / 0.030
G27     321.4          13.0                4.4 +/-    4.16      11.4 +/-    4.16  0.250 / 0.320
G29     165.8          37.7                8.8 +/-    1.16      13.4 +/-    1.16  0.200 / 0.330